The government fragmentation hypothesis (GFH) states that coalition governments spend more than single-party governments due to an underlying common pool problem. Using a large panel data set on 604 local governments in the German state of Baden-Württemberg for the 1994-2014 period, I test the...

Empirical work on the causal effect of government fragmentation finds diversified results. This might be explained by the fact that studies typically are settled in different institutional environments. To assess in how far the political system might shape the effects of fragmentation, this...

This paper measures the causal effect of coalition vs. single-party governments on fiscal policies using a data set of 396 municipalities in the German state of North Rhine-Westphalia in the time period 1985-2004. Using a regression discontinuity design to take the endogeneity of the type of...

This paper shows nonparametric identification of quantile treatment effects (QTE) in the regression discontinuity design. The distributional impacts of social programs such as welfare, education, training programs and unemployment insurance are of large interest to economists. QTE are an...

This paper shows nonparametric identification of quantile treatment effects (QTE) in the regression discontinuity design. The distributional impacts of social programs such as welfare, education, training programs and unemployment insurance are of large interest to economists. QTE are an...

We offer a new strategy to identify the distribution of treatment effects using data from the Infant Health and Development Program (IHDP), a relatively understudied early-childhood intervention for low birth-weight infants. We introduce a new policy parameter, QCD, which denotes quantiles of...

It is standard practice in applied work to rely on linear least squares regression to estimate the effect of a binary variable ("treatment") on some outcome of interest. In this paper I study the interpretation of the regression estimand when treatment effects are in fact heterogeneous.I show...

Is government ideology important for fiscal policy? I study this question with data from all German States over the period 1975-2005. To identify the effect of ideology, I rely on a fuzzy regression discontinuity design. I find that left-wing state governments spend more than state governments...

Is government ideology important for fiscal policy? I study this question with data from all German States over the period 1975-2005. To identify the effect of ideology, I rely on a fuzzy regression discontinuity design. I find that left-wing state governments spend more than state governments...